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DEGRADATION OF POLYETHYLENE TEREPHTHALATE (PET) FILMS IN THE PRESENCE OF LUBRICANTS FOR R134A: A CRITICAL ISSUE FOR HERMETIC MOTOR INSULATION SYSTEMS.

Author(s) : SUNDARESAN S. G., FINKENSTADT W. R.

Type of article: Article, IJR article

Summary

PET EMBRITTLEMENT MECHANISMS WITH THE NEW LUBRICANTS USED WITH R134A WAS STUDIED. THE LUBRICANTS STUDIED WERE 3 POLYPROPYLENE GLYCOLS, PENTAERYTHRITOL ESTER AND A BLEND OF MONOL AND ESTER. THE EFFECTS OF MOISTURE CONTENT, TEMPERATURE AND LUBRICANT STRUCTURE WERE STUDIED. ALL LUBRICANTS IN THIS STUDY WERE OF VISCOSITY GRADE ISO-32 (150 SUS). THE RESULTS WERE COMPARED TO PET FILM EMBRITTLEMENT IN THE PRESENCE OF R12 AND MINRLOL THE STUDY RECONFIRMED THE EARLIER FINDINGS THAT THE PET FILMS MUST BE DRIED TO LOWER THAN 0.1 WT % MOISTURE CONTENT FOR USE IN HERMETIC SYSTEMS.

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Pages: 317-320

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Details

  • Original title: DEGRADATION OF POLYETHYLENE TEREPHTHALATE (PET) FILMS IN THE PRESENCE OF LUBRICANTS FOR R134A: A CRITICAL ISSUE FOR HERMETIC MOTOR INSULATION SYSTEMS.
  • Record ID : 1992-0586
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 14 - n. 6
  • Publication date: 1991/11

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